You have to find the installed [i]libtiff.so.versionnumber[/i] . In terminal run:

[code]sudo locate libtiff*[/code]

It shows something like:

[code]/usr/lib/i386-linux-gnu/libtiff.so.4.3.4[/code]

The path and version-number of your Linux-installation is important, here [i]4.3.4[/i]. You have to link the demanded [i]libtiff.so.3[/i] to your version with Linux-command [i]ln -s[/i]. So type in terminal
[code]sudo ln -s /usr/lib/i386-linux-gnu/libtiff.so.4.3.4 /usr/lib/i386-linux-gnu/libtiff.so.3[/code]

With
[code]sudo /opt/medusa4_personal_v5_0/master_project/startmedusa[/code]